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Mend Optima XL4 Battery Lights Light

i have got no sound with alarm?

i have got no sound with keypad. I have unpluged battery still no sound. the lights light up but no sound please help
optima xl4 microprocessor. This all started with a power cut

den
February 2011
OptimaOptima XL4Security Systems, Home Alarm SystemsBattery Lights Light
battery faulty

gts
February 2011

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Optima XL4 No Sound - Troubleshooting